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Is convex mirror used by dentist?
Which type of mirror used by a dentist? (a) plane (b) convex (c) concave. Option (c) Concave mirrors are used by dentists because they are converging mirrors and reflect light to the focal point. While convex mirrors make things appear smaller, concave ones magnify the images.
Which mirror do dentists use?
So dentists always use concave lenses. The concave mirrors are also known as converging mirrors because they tend to collect lights that fall on them, refocusing parallel incoming rays toward a focus.
Which mirror is used in solar cooker?
concave mirror
Note: A plane mirror can be used in a solar cooker but it cannot concentrate the rays at point as the concave mirror does. Thus, the maximum heat will not be achieved. A convex cannot be at all since it will diverge away the sun rays falling on it.
Which mirror is used in street lights and why?
Convex mirrors
Convex mirrors are used as reflectors in street lights because they are able to spread the light over a wide area.
Is concave mirror used in street lights?
Convex mirror are used as reflector in street lamps whereas concave mirror is used as a reflector in torch and car headlight.
What is the role of mirror in solar cooker?
The glass helps in absorbing the light and thus increasing the heat holding capacity of the solar cooker. Therefore, a plane mirror is used as a reflector and glass sheet is used as an absorber and isolator.
Is U positive in concave mirror?
Since as object is always placed to the left side of a mirror, therefore, the object distance (u) is always negative. If the image is formed behind a concave mirror, the image distance (v) is positive but if the image is formed in front of the mirror , then the image distance will be negative.
Is V negative in concave mirror?
For a concave mirror, it depends for all other cases except when the object is between focus and pole where it forms a virtual, erect image sign of v is negative. For: object between focus and pole, v is positive. else, v is negative.